More details needed. What cruise and excursion and who is telling you this? As far as kayaking in general there are one, two and three person kayaks. As far as canoes go there are one and two passenger canoes that can carry an extra person (or two if they are small kids) in the middle. And any two person canoe can be paddled solo. So I am not sure who is telling you that this is only for pairs. Maybe the outfitter only has two person kayaks and canoes. But either can be paddled by a single person.